What is preordering?

Preordering is a service that lets our customers order a product that is not in stock yet but soon will be.

The product paid for when ordered is reserved, and then shipped on the date shown below the selected size. 

Find out more

Gore-Tex high cut shoes - red GREPON 4S GTX


Regular Price: €369.99

Special Price €295.99

  • Protective
  • Insulative
  • Semi-Cramponable
MIL-Taille normalement
  • Free delivery from 50€ purchase
  • Exchange and return within 30 days
Availability alert OK
Buy online from a partner
Gore-Tex high cut shoes - red GREPON 4S GTX

Regular Price: €369.99

Special Price €295.99

3-season technical mountaineering boot. Protective, precise, lightweight, and warm. Made in Italy. The official boot of the Chamonix Guides Company. The official choice of the Chamonix Guides Company for their 3-season mountaineering performance, these technical boots in GORE-TEX®® DURATHERM® offer all the protection and precision demanded in the high mountains. With a membrane directly bonded onto hollow fibers, the GREPON 4S GTX is 100% waterproof, breathable and withstand the cold very well, providing the insulation needed below zero. At ease on ice and large rocks, they meet the challenge of vertical ascents with their stiff build, which gives the feet maximum support when front-pointing, with optimal lightness. The Vibram® MULAZ EVO outsole is precise, high-traction and lightweight, with a slim toebox. The side AFC™ structure, the fruit of lengthy MILLET expertise, offers ideal heel hold and increases toebox feel. Hybrid crampon compatible, easy to handle, and high-quality Italian manufacturing.
    • 0
    • 1
    • 2
    • 3
    • 4
    • 5
  • adherence
  • heat
  • lightness
  • stability
Technical information
  • Made in Europe
    Made in Europe

    This label guarantees that your product is designed at our French HQ and manufactured in Europe.


    The Vibram® brand is a benchmark for the levels of traction and durability its outsole. We use several Vibram® outsoles which are fully suited to our mountaineering, alpine trek and climbing models.


  • High-cut upper, structure in synthetic components AFC™ system
  • Vibram® lightweight precise mountaineering sole
  • Dual density EVA sole
  • GORE-TEX® Duratherm insulating waterproof breathable membrane Heat regulation -10°C (extreme temperature laboratory tested)
  • Ankle lacing with automatic lock
  • Soft flex ankle in Lycra®
  • Compatible with semi-automatic crampons
  • PU/EVA midsole



    • 750 g


    • Mountaineering
    • Trek

    Product reference

    • MIG1311_2893

    Millet products are not just designed to last, they are also easy to maintain.  Careful use and regular upkeep will guarantee the best results out of your products and will extend their life.


    In case of doubt, always refer to the instructions written on the label of your product.



    • Millet shoes should be washed in water and by hand using a soft brush or a sponge.
    • Above all, never put your shoes into either a washing machine or a dryer.
    • Drying should be done naturally.



    • Millet backpacks should be washed in water and by hand using a soft brush or a sponge.
    • Above all, never put your backpack into either a washing machine or a dryer.
    • Drying should be done in the open air.



    • Caring for a rope is critical in order to guarantee optimal safety when it is used.
    • To wash a rope, it is necessary to use clean, warm water (temperature less than 30°C) and a non-aggressive detergent (such as a liquid Marseille soap-type detergent or a detergent for delicate textiles).  If necessary, brush it with a soft brush.
    • Drying should be done in the shade and away from any source of heat.
    • Store your rope in a dry place, out of the reach of the sun.



    • Air out your Millet sleeping bag regularly to give it back a bit of freshness and to make sure the bag is completely dry before storing it away.
    • For sleeping bags that do not contain down, general washing and drying instructions apply.
    • For sleeping bags that do contain down, please see the section “Products Containing Down,” below.



    • When dealing with products containing down (100% or hybrid), machine washing is done using a delicate program with a special down detergent or a non-aggressive detergent, along with tennis balls placed in the wash to prevent the down from sticking together.  If there is too much detergent left over, run the rinsing program again by itself.  Do not put the product through the washing machine's spin cycle.
    • Drying may be done flat in the open air, turning over the product regularly to dry it well, or in a tumble dryer on a delicate program.



    • Millet clothing must be machine washed at 30°C, and machine dried using a low-temperature program.  To guarantee optimal washing without degrading the product, close up all velcro closures, snap fastenings and zippers, and loosen elastic drawstrings before putting clothing in the machine.



    • This is the case particularly for the following materials: Gore-Tex, Polartec Neoshell, Dryedge, Windstopper, Element Shield
    • After closing the velcro fastenings, zippers and snap fastenings, wash your product at 30°C with a bit of non-aggressive detergent or a special detergent for waterproof materials.  If there is too much detergent left over, run a rinsing program again by itself.  Drying should be done in the open air or in a tumble dryer at low temperature.
    • It is possible to use a specific product to re-waterproof your product or to give it back water repellency.


    The best way to get the right size for choosing your shoes is to measure the size of the foot in cm from the heel to the end (toe). You can measure this size yourself: from the base of the heel to the toe by plotting on a white sheet

    In US size there is a difference between female size and male size (indicated in our correspondence table): the same size in cm does not give the same size for men and women. The English size (indicated UK in our table) does not make the difference between the man size and the woman size.
    Europe US MEN US WOMEN
    3.5 22.3 36 4.5 5.5
    4 22.8 36 2/3 5 6
    4.5 23.3 37 1/3 5.5 6.5
    5 23.7 38 6 7
    5.5 24.2 38 2/3 6.5 7.5
    6 24.7 39 1/3 7 8
    6.5 25.2 40 7.5 8.5
    7 25.6 40 2/3 8 9
    7.5 26.1 41 1/3 8.5 9.5
    8 26.6 42 9 10
    8.5 27.1 42 2/3 9.5 10.5
    9 27.5 43 1/3 10 11
    9.5 28 44 10.5 11.5
    10 28.5 44 2/3 11 12
    10.5 29 45 1/3 11.5 12.5
    11 29.4 46 12 13
    11.5 29.9 46 2/3 12.5 13.5
    12 30.4 47 1/3 13 14
    12.5 30.9 48 13.5 14.5